Thank you for inquiring regarding the Unreal plugin.
Use of the plugin in OSX would require versions of our NatNet libraries that are not available. We only support the Windows environment, and there is currently no development planned for Linux or OSX.

It is possible wider support may be feasible in the future, but that is not something we can promise at this time.

If you need to receive realtime tracking information in a non-Windows environment, the only way to do this would be to utilize Direct Depacketization. Unfortunately, this does not include features that would have been included in an actual plugin.